EP 0844429 B1 20040421 - Low-permeability sheath and its use in high pressure conduits
Title (en)
Low-permeability sheath and its use in high pressure conduits
Title (de)
Hülle mit geringer Permeabilität und ihre Verwendung in Hochdruckleitungen
Title (fr)
Gaine à perméabilité limitée et application aux conduites sous pression
Publication
Application
Priority
FR 9614432 A 19961122
Abstract (en)
[origin: EP0844429A1] The covering is made from extrudable thermoplastic material for making a barrier impermeable to acid gases. It contains a specific level of at least one chemical filler which can react with acid gases in such a way as to irreversibly stop their corrosive effects. The level is determined as a permeability function of the material. Also claimed is the use of the covering as a barrier in a flexible pipe with a metallic framework for transporting petroleum effluents containing H2S or CO2.
IPC 1-7
IPC 8 full level
F16L 9/14 (2006.01); F16L 11/10 (2006.01); F16L 11/12 (2006.01); F16L 58/10 (2006.01)
CPC (source: EP US)
F16L 11/083 (2013.01 - EP US); F16L 11/12 (2013.01 - EP US); F16L 58/1009 (2013.01 - EP US); F16L 2011/047 (2013.01 - EP US); Y10T 428/12292 (2015.01 - EP US); Y10T 428/1393 (2015.01 - EP US); Y10T 428/3154 (2015.04 - EP US); Y10T 428/31681 (2015.04 - EP US)
Designated contracting state (EPC)
DE DK FR GB IT
DOCDB simple family (publication)
EP 0844429 A1 19980527; EP 0844429 B1 20040421; AU 4527497 A 19980528; AU 735036 B2 20010628; BR 9705815 A 19990706; DE 69728738 D1 20040527; DK 0844429 T3 20040809; FR 2756358 A1 19980529; FR 2756358 B1 19990129; JP H10160057 A 19980616; NO 328645 B1 20100419; NO 975352 D0 19971121; NO 975352 L 19980525; US 6110550 A 20000829
DOCDB simple family (application)
EP 97402750 A 19971117; AU 4527497 A 19971119; BR 9705815 A 19971121; DE 69728738 T 19971117; DK 97402750 T 19971117; FR 9614432 A 19961122; JP 32123997 A 19971121; NO 975352 A 19971121; US 97663697 A 19971124